#include<bits/stdc++.h>

using namespace std;
typedef long long ll;

//单一返回函数
int add(int a, int b) {
    return a + b;
}

int mul(int a, int b) {
    return a * b;
}

int main() {
    int a = 3, b = 4;
    int sum = add(a, b);
    int product = mul(a, b);
    cout << sum << endl;
    cout << product << endl;
    return 0;
}